import { type StorageBackend } from '../../backend/api/storage-backend.js';
import { type ConfigAccessor } from './config-accessor.js';
/**
 * A configuration source defines the methods for reading configuration data from a configuration source.
 * {@link ConfigSource} instances provide read-only access to configuration data.
 *
 * Represents a configuration file from a file system storage backend, the contents of the shell environment, the
 * contents of a key within a configuration map, or the contents of a key with a secret.
 */
export interface ConfigSource extends ConfigAccessor {
    /**
     * The name of the configuration source.
     */
    readonly name: string;
    /**
     * The ordinal of the configuration source.
     */
    readonly ordinal: number;
    /**
     * An optional prefix that is used to filter configuration keys that are read from the configuration source.
     */
    readonly prefix?: string;
    /**
     * The backend that is used to read and write configuration data.
     */
    readonly backend: StorageBackend;
    /**
     * Loads the configuration data from the configuration source.
     */
    load(): Promise<void>;
}